US9593810B2 - LED package and method for manufacturing the LED package - Google Patents

LED package and method for manufacturing the LED package Download PDF

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Publication number
US9593810B2
US9593810B2 US12/678,321 US67832108A US9593810B2 US 9593810 B2 US9593810 B2 US 9593810B2 US 67832108 A US67832108 A US 67832108A US 9593810 B2 US9593810 B2 US 9593810B2
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United States
Prior art keywords
optically detectable
cover
led
optical element
marks
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US12/678,321
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US20100284198A1 (en
Inventor
Harald Willwohl
Norbertus Antonius Maria Sweegers
Jan Kloosterman
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Lumileds LLC
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Koninklijke Philips NV
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Assigned to KONINKLIJKE PHILIPS ELECTRONICS, N.V. reassignment KONINKLIJKE PHILIPS ELECTRONICS, N.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KLOOSTERMAN, JAN, SWEEGERS, NORBERTUS ANTONIUS MARIA, WILLWOHL, HAROLD
Publication of US20100284198A1 publication Critical patent/US20100284198A1/en
Assigned to KONINKLIJKE PHILIPS N.V. reassignment KONINKLIJKE PHILIPS N.V. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: KONINKLIJKE PHILIPS ELECTRONICS N.V.
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Assigned to DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT reassignment DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LUMILEDS LLC
Assigned to LUMILEDS LLC reassignment LUMILEDS LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KONINKLIJKE PHILIPS N.V.
Assigned to SOUND POINT AGENCY LLC reassignment SOUND POINT AGENCY LLC SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LUMILEDS HOLDING B.V., LUMILEDS LLC
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/66—Details of globes or covers forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/90—Methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F21S48/115—
    • F21S48/1154—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • F21S48/215—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0266—Marks, test patterns or identification means
    • H05K1/0269—Marks, test patterns or identification means for visual or optical inspection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means

Definitions

  • the invention relates to the field of LED packages, which may be used in motor vehicle lamps to provide light by means of at least one light emitting diode (LED) of the LED package.
  • the invention relates further to a method, by which such kind of a LED package may be manufactured.
  • a LED package for use in a lamp comprising at least one LED, an optical element for guiding light emitted by the LED, a cover for covering at least partially electrical components connectable to the LED and at least one optical detectable reference mark, wherein the optical element comprises at least one first optical detectable mark and the cover comprises at least one second optical detectable mark, whereby the optical element and the cover are arranged and aligned both with respect to the same reference mark by means of the first mark and the second mark.
  • the optical element and the cover Due to the marks of the optical element and the cover it is not necessary to arrange and align the cover with respect to the optical element, which is arranged and aligned for instance with respect to the LED, but to arrange and align the optical element and the cover both with respect for instance to the LED. Due to the same reference for both the optical element and the cover manufacturing tolerances are not added to each other so that the accuracy of a correct arrangement is increased. Particularly manufacturing tolerances may compensate each other. Although several different parts of the LED package are provided, which normally may affect the brightness and/or the luminous flux of the light leaving the LED package due to manufacturing tolerances leading to scattered light, a significant rise of scattered light is prevented. Particularly it is possible to perform the positioning of the optical element and the cover by means of the same optical system.
  • the LED package according to the invention is an adapted control software for already existing manufacturing machines.
  • the quality of the LED package is improved at low costs.
  • the optical element and the cover are two-piece so that different materials may be selected. For instance the material of the optical element is chosen with respect to high heat resistance and good optical properties, wherein it is not necessary to chose the same material for the cover, since the cover may be arranged spaced to the LED and/or the optical element without affecting the optical performance of the LED package.
  • a substrate is provided, onto which the LED is arranged, wherein the substrate comprises the reference mark or the substrate comprises at least one third optical detectable mark for arranging and aligning the substrate with respect to the same reference mark. Since the LED may be fixed to the substrate it is sufficient, when the substrate comprises the reference mark in order to position the optical element and the cover accurately with respect to the LED.
  • a heat sink for leading away heat from the LED may be provided, to which the LED is thermally connected, wherein the heat sink comprises the reference mark or the heat sink comprises at least one forth optical detectable mark for arranging and aligning the heat sink with respect to the same reference mark.
  • the LED or a lighting field element comprising the LED comprises at least one fifth optical detectable mark for arranging and aligning the LED or the lighting field element with respect to the same reference mark.
  • the lighting element may comprise several LEDs arranged in regular pattern, wherein the LEDs may be provided onto a common substructure comprising the reference mark.
  • a thermal barrier particularly a gap, is provided. Due to the high thermal insulation it is not necessary to choose the material of the cover with respect to a high heat resistance so that the cover may be manufactured for example of a thermoplastic material by injection molding. Particularly the cover comprises a lower heat resistance than the heat resistance of the optical element.
  • the cover comprises at least one alignment element, particularly three alignment elements, more particularly alignment protrusions, for aligning the cover with respect to a housing of a lamp.
  • the alignment protrusions may abut the housing so that a correct alignment of the LED package with respect to the housing is performed by the alignment protrusions.
  • an alignment perpendicular to the plane of the reference marks is provided.
  • An alignment in three orthogonal directions may be realized.
  • the cover may comprise at least one, particularly tapered, connection opening for connecting the cover via the connection opening particularly by laser welding.
  • the invention further relates to a lamp, particularly headlight or taillight for motor vehicles, comprising a LED package, which may be designed as previously described, and a housing, to which the LED package is connected via the cover. Since the necessary alignment of the LED is performed during the manufacturing of the LED package the assembling of the LED package into the lamp may be facilitated. For instance it is sufficient to provide a snap connection between the cover of the LED package and the housing of the lamp to provide an accurate alignment of the LED package.
  • the housing comprises at least one referencing features for mounting at least one secondary optics element such as lenses or collimators adjacent to the optical element.
  • the secondary optics element may be part of a lens system, so that the light emitted from the LED package may be focused as desired. Since the LED package is connected to the housing, an exact positioning of the LED package with respect to housing is possible so that the secondary optics element(s) may be arranged very accurate with respect to the optical element of the LED package.
  • the secondary optics element is arranged close to the optical element so that mainly all emitted light is collected by the secondary optics element.
  • the invention relates further to a method of manufacturing a LED package as previously described, wherein a reference mark is provided at the LED package, particularly at the substrate or the heat sink, the optical element is arranged and aligned with respect to the reference mark via the first optical detectable mark by means of an optical system and the cover is arranged and aligned with respect to the same reference mark via the second optical detectable mark by means of the optical system.
  • FIG. 1 is a schematic top view of the LED package according to the invention.
  • FIG. 2 is a schematic sectional view of the LED package of FIG. 1 .
  • the LED package 10 illustrated in FIG. 1 comprises a heat sink 12 , which may be a copper plate or the like.
  • a substrate 14 is thermally and mechanical connected to the heat sink 12 .
  • Four LEDs 16 arranged in a line are fixed to the substrate 14 .
  • the LEDs 16 are surrounded by an optical element 18 , which may be a collimator comprising a reflective coating for collecting and guiding light emitted by the LEDs 16 .
  • the optical element 18 is aligned in close vicinity to the LEDs 16 .
  • the optical element 18 comprises a material of high specular or diffuse reflectivity and a high temperature resistance.
  • the coefficient of reflection may be ⁇ 85%, preferably ⁇ 90% and most preferred ⁇ 95%.
  • This material may comprise a good long term stability above 150° C.
  • a high temperature plastics material such as LCP filled with TiO 2 or Al 2 O 3 particles may be used as material with a high diffuse reflectivity.
  • PCB 20 is provided to control the LEDs 16 .
  • the PCB 20 is connected to the LEDs 16 via connecting means 22 , which are connected to not illustrated lines arranged on the substrate 14 .
  • Connectors 24 are connected to the PCB 20 for applying an electrical source.
  • a direct electrical connection between the connectors 24 and the substrate 14 is established. Most preferred this electrical connection is performed by a laser welding joint of the connectors 24 to a conductive layer of the substrate 14 .
  • a cover 26 covers the connectors 24 , the PCB 20 , the connecting means 20 and most of the substrate 14 as well as the heat sink 12 .
  • the cover comprises projections 28 , by means of which the LED package 10 may by fastened to a housing of a lamp. Due to the projections 28 the LED package may be accurate positioned relative to the housing, a lens system or the like.
  • the protrusions 28 may be spring-loaded received by a recess of such kind of a housing, so that a definite and accurate alignment of the LED package is provided.
  • the optical element 18 comprises two first marks 30 , which are optical detectable by an optical system for providing a correct arrangement and alignment with respect to two reference marks 32 , which are provided at the substrate 14 in the illustrated embodiment.
  • the cover 26 comprises two second optical detectable marks 34 , by means of which the cover 26 is arranged and aligned with respect to the same reference marks 32 of the substrate 14 .
  • the marks 32 may be third optical detectable marks 32 for arranging and aligning the substrate 14 as well as the LEDs 16 fixed to the substrate 14 with respect to reference marks arranged somewhere else, for example on the heat sink 12 , wherein the optical element 18 and the cover 26 are positioned with respect to the same reference mark.
  • the heat sink 12 may comprise two fourth optical marks 36 so that the substrate 14 and the heat sink 12 may be correctly positioned with respect to each other via the same reference mark 32 .
  • the cover 26 further comprises three alignment protrusions 38 , which protrude to the same level ( FIG. 2 ), so that the LED package 10 may be positioned at a correct height at a housing of a motor vehicle lamp or an external optical system such as a reflector or a projector system.
  • the LED package 10 may be spring loaded, for instance via the heat sink 12 , so that all three alignment protrusions 38 are in contact to the housing in assembled state.
  • the cover 26 comprises three tapered connection openings 40 so that the cover 26 may be connected to the heat sink 12 via laser welding or the like. Between the cover 26 and the optical element 18 is a gap 42 provided.
  • the gap 42 provides a thermal barrier, so that the heat emitted by the LEDs 16 and conducted to the optical element 18 is mainly not conducted to the cover 26 .
  • the forth mark 36 of the heat sink 12 is the reference mark instead of the mark 32 of the substrate 14 .
  • the LEDs 16 may comprise forth optical detactable marks or the LEDs may be connected to common substructure of a separate lighning field connected to the substrate 14 , wherein the lighting field, particularly the substructure, like a thin film layer, may comprise the forth marks for arranging and aligning the LEDs 16 with respect to the same reference mark 32 .
  • the marks 30 , 32 , 34 , 36 may not only be designed cross-like.
  • the marks 30 , 32 , 34 , 36 may have any suitable design sufficient to compare two different marks 30 , 32 , 34 , 36 by optical techniques for alignment to each other in two different directions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
US12/678,321 2007-09-20 2008-09-16 LED package and method for manufacturing the LED package Active 2031-03-01 US9593810B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP07116835.5 2007-09-20
EP07116835 2007-09-20
EP07116835 2007-09-20
PCT/IB2008/053744 WO2009037634A2 (en) 2007-09-20 2008-09-16 Led package and method for manufacturing the led package

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/053744 A-371-Of-International WO2009037634A2 (en) 2007-09-20 2008-09-16 Led package and method for manufacturing the led package

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/418,538 Continuation US10344923B2 (en) 2007-09-20 2017-01-27 LED package having protrusions for alignment of package within a housing

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US20100284198A1 US20100284198A1 (en) 2010-11-11
US9593810B2 true US9593810B2 (en) 2017-03-14

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US12/678,321 Active 2031-03-01 US9593810B2 (en) 2007-09-20 2008-09-16 LED package and method for manufacturing the LED package
US15/418,538 Active 2029-02-21 US10344923B2 (en) 2007-09-20 2017-01-27 LED package having protrusions for alignment of package within a housing

Family Applications After (1)

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US15/418,538 Active 2029-02-21 US10344923B2 (en) 2007-09-20 2017-01-27 LED package having protrusions for alignment of package within a housing

Country Status (6)

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US (2) US9593810B2 (zh)
EP (1) EP2201615B8 (zh)
JP (1) JP5301548B2 (zh)
CN (1) CN101803049B (zh)
TW (1) TWI479697B (zh)
WO (1) WO2009037634A2 (zh)

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AT513747B1 (de) 2013-02-28 2014-07-15 Mikroelektronik Ges Mit Beschränkter Haftung Ab Bestückungsverfahren für Schaltungsträger und Schaltungsträger
FR3004003B1 (fr) * 2013-03-29 2016-08-12 Soitec Solar Gmbh Procede d'assemblage de module de haute precision
AT514599B1 (de) * 2013-07-05 2015-02-15 Melecs Ews Gmbh & Co Kg Verfahren zur Bestückung elektronischer Leiterplatten mit optischen Bauelementen
US10634325B2 (en) 2014-08-04 2020-04-28 Fuji Corporation Mounting device
WO2016186985A1 (en) * 2015-05-15 2016-11-24 Momentive Performance Materials Inc. Light emitting diode assembly using thermal pyrolytic graphite for thermal management
AT517259B1 (de) 2015-06-09 2020-01-15 Zkw Group Gmbh Verfahren zur positionsgenauen Bestückung eines Schaltungsträgers
US10234120B2 (en) 2016-01-21 2019-03-19 Inform Lightworks, Inc. Compression activated switch device for LED circuit boards
WO2020120200A1 (en) 2018-12-10 2020-06-18 Lumileds Holding B.V. Lighting device comprising spring element
DE102019106910A1 (de) * 2019-03-19 2020-09-24 HELLA GmbH & Co. KGaA Verfahren zur Anordnung einer Leiterplatte auf einem Kühlkörper
FR3116588B1 (fr) * 2020-11-20 2022-12-16 Valeo Vision Module d'éclairage pour un véhicule automobile
DE102021130929A1 (de) * 2021-11-25 2023-05-25 HELLA GmbH & Co. KGaA Toleranzreduzierte Beleuchtungseinrichtung für Fahrzeuge

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TW200929617A (en) 2009-07-01
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TWI479697B (zh) 2015-04-01
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US10344923B2 (en) 2019-07-09
US20100284198A1 (en) 2010-11-11

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